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Finding the Fourth Proportional to 75,135.34, 112,524.10 and 43,478.68

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Solution

The fourth proportional to 75,135.34, 112,524.10 and 43,478.68 is: 65,114.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,135.34 : 112,524.10 = 43,478.68 : x
  2. Step 2: Convert to fraction form
    75,135.34/112,524.10 = 43,478.68/x
  3. Step 3: Cross multiply
    75,135.34x = 112,524.10 × 43,478.68
  4. Step 4: Simplify right side
    75,135.34x = 4,892,399,118.79
  5. Step 5: Solve for x
    x = 4,892,399,118.79/75,135.34
  6. Step 6: Final answer
    x = 65,114.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.